Wall painting device for indoor decoration

Abstract

The invention discloses a wall painting device for indoor decoration, and relates to the technical field of indoor decoration tools, the wall painting device for indoor decoration comprises a U-shaped mounting seat, a telescopic rod used for assisting manual driving is mounted on the U-shaped mounting seat, and a painting cloth sleeve used for dipping and painting is arranged on the U-shaped mounting seat. In the painting process, according to the actual painting requirements, the adjusting assembly and the driving assembly are matched, the use radius of the painting cloth sleeve on the outer side of the mounting cylinder is rapidly adjusted, and through adjustment of the use radius, the painting device can adapt to painting operation of working environments such as large-area flat wall surfaces, wall surfaces with a small number of obstacles and narrow corner areas; according to the painting device, the barrel body does not need to be replaced and installed tediously, flexible adjustment and use are facilitated, in addition, in the adjustment process, through mutual cooperation of the transmission assembly, the fixed supporting assembly and the elastic supporting assembly, the supporting force on the painting cloth sleeve is reasonably controlled, and stable use of the adjusted painting cloth sleeve is facilitated.

Description

Technical Field

[0001] This invention relates to the field of interior decoration tools, specifically to a wall painting device for interior decoration. Background Technology

[0002] Roller brushes are the most widely used handheld tools in interior wall painting. With their simple operation, low cost, and strong adaptability, they have become the core tool for painting applications such as latex paint, wall paint, and putty, covering multiple processes from base leveling to finishing coating. They are especially suitable for rapid construction on large-area walls.

[0003] In interior decoration, roller brushes are used for various painting scenarios. For example, large-diameter roller brushes cover a wide area and are suitable for quick construction on large, flat walls such as living rooms and bedrooms, reducing the number of coats. Medium-diameter roller brushes are suitable for medium-sized walls or walls with a few obstacles, balancing efficiency and flexibility. Small-diameter mini rollers are designed for narrow corners, baseboards, windowsills, and other small areas, allowing for precise application and avoiding missed areas. However, when using roller brushes with different outer diameters, it is necessary to change the cylinder size on the roller mounting base. The installation and removal of roller brush cylinders is cumbersome and not convenient for flexible adjustment. Therefore, we propose an interior decoration wall painting device. Summary of the Invention

[0004] The purpose of this invention is to provide a wall painting device for interior decoration, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a wall painting device for interior decoration, comprising a U-shaped mounting base, a telescopic rod for assisting manual driving mounted on the U-shaped mounting base, a painting cloth sleeve for dipping paint on the U-shaped mounting base, and further comprising:

[0006] The mounting components are set on the U-shaped mounting base to assist in the installation and connection of the paint cloth cover;

[0007] An adjustment component, mounted on the installation component, is used to adjust the usage state of the paint cloth cover after installation. The adjustment component is equipped with a drive component for driving during the adjustment process.

[0008] In addition, a fixed support assembly and an elastic support assembly are provided on the U-shaped mounting base for supporting and fixing the paint cloth cover, and a transmission assembly for assisting the transmission during the adjustment process is provided between the elastic assembly and the adjustment assembly.

[0009] Preferably, the mounting assembly includes a mounting cylinder with mounting sleeves fixed at both ends. The mounting sleeves are rotatably connected to a U-shaped mounting base. Multiple sets of arc-shaped support plates are provided on the outer side of the mounting cylinder for supporting the inner side of the paint cloth cover. The arc-shaped support plates are arranged in a circular array on the mounting cylinder. Baffles are fixed on both sides of the arc-shaped support plates to prevent deviation during the support process against the inner side of the paint cloth cover.

[0010] Preferably, the adjustment component includes multiple sets of square grooves formed on the mounting cylinder, the square grooves communicating with the interior of the mounting cylinder, and the sets of square grooves arranged in a circular array on the mounting cylinder. Each set of square grooves is matched with a set of arc-shaped support plates. Two sets of connecting rods are provided inside the square grooves, and two sets of threaded sleeves are provided inside the mounting cylinder. The two ends of the connecting rods are rotatably connected to the arc-shaped support plates and the threaded sleeves respectively through pins.

[0011] Preferably, the drive assembly includes a double-ended lead screw rotatably connected to the mounting cylinder, with the threads at both ends of the double-ended lead screw having opposite directions. Two sets of threaded sleeves are respectively engaged with both ends of the double-ended lead screw. One end of the double-ended lead screw is located outside the mounting cylinder and is fixed with a rotating pin for assisting rotation. Two sets of guide rods are symmetrically fixed on the two sets of threaded sleeves, and the guide rods are fixed inside the mounting cylinder.

[0012] Preferably, the fixed support assembly includes two sets of first support rollers rotatably connected to the U-shaped mounting base for supporting the inner side of the paint cloth cover, and two sets of first retaining rings fixed on the first support rollers for preventing swaying and deviation during the support process.

[0013] Preferably, the elastic support assembly is disposed between the fixed support assembly and the mounting cylinder. The elastic support assembly includes two sets of mounting platforms disposed on the U-shaped mounting base. A second support roller for supporting the outer side of the paint cloth cover is rotatably connected to the mounting platform. Two sets of second retaining rings for preventing swaying and deviation during the support process are fixed on both sides of the second support roller. The U-shaped mounting base is provided with a connecting assembly for connecting the mounting platform and an elastic component for elastic pushing.

[0014] Preferably, the connecting assembly includes a mounting groove formed on a U-shaped mounting base, two sets of strip plates are symmetrically arranged inside the mounting groove, a round rod is slidably connected to the strip plate, the round rod is fixed to the mounting groove, two sets of mounting platforms are located between the two sets of strip plates, and the elastic component is disposed between the strip plate and the mounting platform.

[0015] Preferably, the elastic component includes multiple sets of sleeves fixed to the strip plate, with a sliding rod slidably connected to each sleeve. One end of the sliding rod is fixed to the mounting platform, and a spring is sleeved on the outside of each sleeve. The two ends of the spring are respectively abutted against the strip plate and the mounting platform.

[0016] Preferably, the transmission assembly includes a transmission plate disposed below the mounting sleeve, the transmission plate having an arc-shaped groove for abutting and transmitting power with two adjacent sets of arc-shaped support plates, and multiple sets of fixing rods fixed on the transmission plate, with a linkage assembly for auxiliary linkage provided between the fixing rods and the strip plate.

[0017] Preferably, the linkage component includes a linkage plate slidably connected to the U-shaped mounting base, a fixing rod fixed to the linkage plate, two sets of inclined grooves provided on the linkage plate, transmission pins slidably connected to the two sets of inclined grooves, and the two sets of transmission pins respectively fixed to two sets of strip plates.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] During the painting process, this invention allows for rapid adjustment of the radius of the paint sleeve on the outside of the mounting cylinder, based on actual painting needs and in conjunction with the adjustment and drive components. By adjusting the radius, it can adapt to painting operations in various working environments, such as large flat walls, walls with few obstacles, and narrow corner areas. It eliminates the need for cumbersome cylinder replacement and installation, facilitating flexible adjustment and use. Furthermore, during adjustment, the transmission component, fixed support component, and elastic support component work together to reasonably control the support force on the paint sleeve, ensuring stable use of the adjusted paint sleeve. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the U-shaped mounting base structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the mounting components and U-shaped mounting base of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation component structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the adjustment component and drive component of the present invention;

[0025] Figure 6 This is a schematic diagram of the fixed support component structure of the present invention;

[0026] Figure 7This is a schematic diagram of the elastic support component and connecting component of the present invention;

[0027] Figure 8 This is a schematic diagram of the transmission component and linkage component of the present invention.

[0028] In the diagram: 101-U-shaped mounting base; 102-telescopic rod; 103-painting cloth sleeve; 201-mounting cylinder; 202-mounting sleeve; 203-arc-shaped support plate; 204-baffle; 301-square groove; 302-connecting rod; 303-threaded sleeve; 401-double-ended lead screw; 402-rotating pin; 403-guide rod; 501-first support roller; 502-first retaining ring; 601-mounting platform; 602-second support roller; 603-second retaining ring; 701-mounting groove; 702-strip plate; 703-round rod; 801-sleeve; 802-slide rod; 803-spring; 901-linkage plate; 902-sloping groove; 903-transmission pin; 1001-transmission plate; 1002-arc-shaped groove; 1003-fixed rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Example 1

[0031] Please see Figures 1-8 The interior wall painting device shown in the figure includes a U-shaped mounting base 101, a telescopic rod 102 for assisting manual operation mounted on the U-shaped mounting base 101, and a paint cloth cover 103 for dipping paint in the paint and applying it. It also includes:

[0032] The mounting components are set on the U-shaped mounting base 101 to assist in the installation and connection of the paint cloth cover 103;

[0033] An adjustment component, mounted on the installation component, is used to adjust the usage status of the installed paint cloth cover 103. The adjustment component is equipped with a drive component for driving during the adjustment process.

[0034] In addition, a fixed support assembly and an elastic support assembly are provided on the U-shaped mounting base 101 for supporting and fixing the paint cloth cover 103, and a transmission assembly for assisting the transmission during the adjustment process is provided between the elastic assembly and the adjustment assembly.

[0035] It should be noted that during the painting process, the radius of use of the outer paint sleeve 103 of the mounting cylinder 201 can be quickly adjusted according to the actual painting needs, in conjunction with the adjustment and drive components. By adjusting the radius, it can adapt to painting operations in working environments such as large flat walls, walls with few obstacles, and narrow corner areas, without the need for cumbersome cylinder replacement and installation, facilitating flexible adjustment and use. In addition, during the adjustment process, the support force on the paint sleeve 103 is reasonably controlled through the cooperation of the transmission component, fixed support component, and elastic support component, facilitating the stable use of the paint sleeve 103 after adjustment.

[0036] Preferably, the mounting assembly includes a mounting cylinder 201, with mounting sleeves 202 fixed at both ends of the mounting cylinder 201. The mounting sleeves 202 are rotatably connected to the U-shaped mounting base 101. Multiple sets of arc-shaped support plates 203 are provided on the outer side of the mounting cylinder 201 for supporting against the inner side of the paint cloth cover 103. The arc-shaped support plates 203 are arranged in a circular array on the mounting cylinder 201. Baffles 204 are fixed on both sides of the arc-shaped support plates 203 for preventing deviation during the support against the inner side of the paint cloth cover 103.

[0037] It should be noted here that the installation cylinder 201, the installation sleeve 202, and the arc-shaped support plate 203 facilitate the support and installation of the paint cloth cover 103.

[0038] Preferably, the adjusting assembly includes multiple sets of square grooves 301 formed on the mounting cylinder 201. The square grooves 301 are connected to the interior of the mounting cylinder 201, and the square grooves 301 are arranged in a circular array on the mounting cylinder 201. Each set of square grooves 301 is matched with a set of arc-shaped support plates 203. Two sets of connecting rods 302 are arranged inside the square grooves 301, and two sets of threaded sleeves 303 are arranged inside the mounting cylinder 201. The two ends of the connecting rods 302 are respectively connected to the arc-shaped support plates 203 and the threaded sleeves 303. The threaded sleeve 303 is rotatably connected by a pin; the drive assembly includes a double-ended lead screw 401 rotatably connected to the mounting cylinder 201, and the threads at both ends of the double-ended lead screw 401 are arranged in opposite directions. The two sets of threaded sleeves 303 are respectively meshed with the two ends of the double-ended lead screw 401. One end of the double-ended lead screw 401 is located outside the mounting cylinder 201 and is fixed with a rotating pin 402 for auxiliary rotation. Two sets of guide rods 403 are symmetrically fixed on the two sets of threaded sleeves 303, and the guide rods 403 are fixed inside the mounting cylinder 201.

[0039] It should be noted that: by rotating the pivot pin 402, the double-ended lead screw 401 is driven to rotate. Because the threads at both ends of the double-ended lead screw 401 are set in opposite directions, during the rotation of the double-ended lead screw 401, the two sets of threaded sleeves 303 are driven to move through the mutual meshing transmission between the two ends of the double-ended lead screw 401. During the movement of the threaded sleeves 303, the sliding guide action of the guide rod 403 causes the two sets of threaded sleeves 303 to move closer or further apart after being subjected to force. During the movement of the two sets of threaded sleeves 303, the connection action of the two sets of connecting rods 302 pushes the arc-shaped support plates 203 to move further apart or closer together on the outside of the mounting sleeve 202 under force. Because the arc-shaped support plates 203 abut against the outside of the paint cloth sleeve 103, the working radius of the paint cloth sleeve 103 is adjusted by the movement of the paint cloth sleeve 103.

[0040] Preferably, the fixed support assembly includes two sets of first support rollers 501 rotatably connected to the U-shaped mounting base 101 for abutting and supporting the inner side of the paint cloth cover 103. Two sets of first retaining rings 502 for preventing swaying and deviation during the support process are fixed on the first support rollers 501. The elastic support assembly is disposed between the fixed support assembly and the mounting cylinder 201. The elastic support assembly includes two sets of mounting platforms 601 disposed on the U-shaped mounting base 101. Second support rollers 602 for abutting and supporting the outer side of the paint cloth cover 103 are rotatably connected to the mounting platforms 601. Two sets of second retaining rings 603 for preventing swaying and deviation during the support process are fixed on both sides of the second support rollers 602. The U-shaped mounting base 101 is provided with a connecting assembly for connecting to the mounting platforms 601 and an elastic component for elastic pushing.

[0041] It should be noted that during the adjustment of the radius of use of the paint cloth cover 103 through the movement of each set of arc-shaped support plates 203, the support of the inner side of the paint cloth cover 103 by the two sets of first support rollers 501 on the fixed support assembly and the support of the outer side of the paint cloth cover 103 by the second support rollers 602 on the two sets of mounting platforms 601 under the elastic force of the elastic assembly ensures that the paint cloth cover 103 is always in close contact with the outer side of each set of arc-shaped support plates 203 during the adjustment process, thus ensuring that the adjusted paint cloth cover 103 can be used stably.

[0042] Preferably, the connecting component includes a mounting groove 701 formed on the U-shaped mounting base 101, two sets of strip plates 702 are symmetrically arranged inside the mounting groove 701, a round rod 703 is slidably connected to the strip plate 702, the round rod 703 is fixed on the mounting groove 701, two sets of mounting platforms 601 are located between the two sets of strip plates 702, and an elastic component is disposed between the strip plate 702 and the mounting platform 601;

[0043] It should be noted that the mounting slot 701, strip plate 702 and round rod 703 facilitate the installation and connection of the mounting platform 601.

[0044] Preferably, the elastic component includes multiple sets of sleeves 801 fixed on the strip plate 702, a slide rod 802 slidably connected on the sleeve 801, one end of the slide rod 802 being fixed to the mounting platform 601, and a spring 803 being sleeved on the outside of the sleeve 801, with both ends of the spring 803 abutting against the strip plate 702 and the mounting platform 601 respectively.

[0045] It should be noted that: multiple sets of sleeves 801 and slide rods 802 facilitate the telescopic guidance between the auxiliary strip plate 702 and the mounting platform 601, and springs 803 facilitate the elastic pushing of the mounting platform 601.

[0046] Preferably, the transmission assembly includes a transmission plate 1001 disposed below the mounting sleeve 202. The transmission plate 1001 has an arc groove 1002 for abutting and transmitting with two adjacent sets of arc support plates 203. Multiple sets of fixing rods 1003 are fixed on the transmission plate 1001. A linkage assembly for auxiliary linkage is disposed between the fixing rods 1003 and the strip plate 702.

[0047] It should be noted that during the adjustment process, when the working radius of the outer paint cloth sleeve 103 of the mounting cylinder 201 is increased by the mutual movement of each group of arc-shaped support plates 203, the arc-shaped support plates 203 are pushed against each other by the movement of each group of arc-shaped support plates 203 and the mutual resistance between the arc-shaped groove 1002 on the transmission plate 1001 and the two adjacent groups of arc-shaped support plates 203. During the pushing process, the linkage plate 901 is driven to move through the connecting action of the fixed rod 1003.

[0048] Preferably, the linkage component includes a linkage plate 901 slidably connected to the U-shaped mounting base 101, a fixing rod 1003 fixed to the linkage plate 901, two sets of inclined grooves 902 are provided on the linkage plate 901, and transmission pins 903 are slidably connected to the two sets of inclined grooves 902, and the two sets of transmission pins 903 are respectively fixed to two sets of strip plates 702.

[0049] It should be noted here that: through transmission, the linkage plate 901 is driven to move. During the movement of the linkage plate 901, the interaction between the two sets of inclined grooves 902 and the two sets of transmission pins 903 drives the two sets of strip plates 702 to move closer or further apart. Through the relative movement of the two sets of strip plates 702, a relative position is created between the strip plates 702 and the mounting platform 601. The existence of relative displacement adjusts the elastic force of the elastic component between the strip plates 702 and the mounting platform 601.

[0050] In this plan, the interior wall painting device includes the following steps:

[0051] During the wall painting process using a roller brush, the operator holds the telescopic rod 102 and drives the U-shaped mounting base 101 to move through the telescopic rod 102. Through the movement of the U-shaped mounting base 101, the paint cloth 103 is dipped in powder and then attached to the wall. After the paint cloth 103 is dipped in powder and attached to the wall, the operator drives the U-shaped mounting base 101 to move toward the position on the wall to be painted. During the movement, the powder dipped in the paint cloth 103 is brushed onto the wall to complete the painting operation.

[0052] During the painting process, the usable radius of the outer paint sleeve 103 of the mounting cylinder 201 can be quickly adjusted according to the actual painting needs, in conjunction with the adjustment and drive components. By adjusting the radius, it can adapt to painting operations on large flat walls, walls with few obstacles, and narrow corner areas, eliminating the need for cumbersome cylinder replacement and installation, and facilitating flexible adjustment. During the adjustment of the usable radius of the outer paint sleeve 103 of the mounting cylinder 201, the double-ended screw 401 is driven to rotate by rotating the pivot pin 402. Because the threads at both ends of the double-ended screw 401 are set in opposite directions, during the rotation of the double-ended screw 401, the two... The threaded sleeves 303 are meshed with both ends of the double-ended lead screw 401 to drive the two sets of threaded sleeves 303 to move. During the movement of the threaded sleeves 303, the sliding guide rod 403 causes the two sets of threaded sleeves 303 to move closer or further apart after being subjected to force. During the movement of the two sets of threaded sleeves 303, the connecting rods 302 push the arc-shaped support plates 203 to move further apart or closer together on the outside of the mounting sleeve 202. Since the arc-shaped support plates 203 abut against the outside of the paint cloth sleeve 103, the working radius of the paint cloth sleeve 103 is adjusted by the movement of the paint cloth sleeve 103.

[0053] During the adjustment of the usable radius of the paint cloth cover 103 through the movement of each set of arc-shaped support plates 203, the support of the inner side of the paint cloth cover 103 by the two sets of first support rollers 501 on the fixed support assembly and the support of the outer side of the paint cloth cover 103 by the second support rollers 602 on the two sets of mounting platforms 601 under the elastic force of the elastic assembly ensures that the paint cloth cover 103 remains tightly attached to the outer side of each set of arc-shaped support plates 203 during the adjustment process, ensuring that the adjusted paint cloth cover 103 can be used stably. In addition, during the adjustment process, when the usable radius of the paint cloth cover 103 on the outer side of the mounting cylinder 201 is increased by the mutual movement of each set of arc-shaped support plates 203, the movement of each set of arc-shaped support plates 203 and the abutment of the arc groove 1002 on the transmission plate 1001 with the two adjacent sets of arc-shaped support plates 203 push the arc-shaped support plates 203 against each other. During the pushing process, the fixed rod 1 The connection function of 003 drives the linkage plate 901 to move. During the movement of the linkage plate 901, the interaction between the two sets of inclined grooves 902 and the two sets of transmission pins 903 drives the two sets of strip plates 702 to move away from each other. The movement of the two sets of strip plates 702 away from each other reduces the elastic force of the elastic component between the strip plate 702 and the mounting platform 601, thereby reducing the opposing support force of the elastic component on the second support roller 602 and the paint cloth cover 103 on the mounting platform 601. This prevents the paint cloth cover 103 from being damaged due to maintaining high elastic support when the service radius increases. Conversely, when the movement of each set of arc-shaped support plates 203 moves closer to each other, reducing the service radius of the paint cloth cover 103 on the outside of the mounting cylinder 201, the transmission increases the opposing support force of the elastic component on the second support roller 602 and the paint cloth cover 103 on the mounting platform 601, ensuring the support strength of the paint cloth cover 103 when the service radius decreases.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. Interior wall painting equipment, including: U-shaped mounting base (101), on which a telescopic rod (102) for assisting manual driving is installed, and a paint cloth cover (103) for dipping paint is provided on the U-shaped mounting base (101). Its characteristic is that it further includes: The mounting components are set on the U-shaped mounting base (101) to assist in the installation and connection of the paint cloth cover (103); An adjustment component is provided on the installation component for adjusting the usage state of the paint cloth cover (103) after installation. The adjustment component is provided with a drive component for driving during the adjustment process. In addition, a fixed support assembly and an elastic support assembly are provided on the U-shaped mounting base (101) for supporting and fixing the paint cloth cover (103), and a transmission assembly for assisting the transmission during the adjustment process is provided between the elastic assembly and the adjustment assembly.

2. The wall painting device for interior decoration according to claim 1, characterized in that: The installation assembly includes an installation cylinder (201), with installation sleeves (202) fixed at both ends of the installation cylinder (201). The installation sleeves (202) are rotatably connected to the U-shaped mounting base (101). Multiple sets of arc-shaped support plates (203) are provided on the outer side of the installation cylinder (201) for supporting against the inner side of the painting cloth cover (103). Each set of arc-shaped support plates (203) is arranged in a circular array on the installation cylinder (201). Baffles (204) are fixed on both sides of the arc-shaped support plates (203) for preventing deviation during the support against the inner side of the painting cloth cover (103).

3. The wall painting device for interior decoration according to claim 2, characterized in that: The adjustment component includes multiple sets of square grooves (301) formed on the mounting cylinder (201). The square grooves (301) are connected to the interior of the mounting cylinder (201), and the square grooves (301) are arranged in a circular array on the mounting cylinder (201). Each set of square grooves (301) is matched with each set of arc-shaped support plates (203). Two sets of connecting rods (302) are provided inside the square grooves (301), and two sets of threaded sleeves (303) are provided inside the mounting cylinder (201). The two ends of the connecting rods (302) are rotatably connected to the arc-shaped support plates (203) and the threaded sleeves (303) respectively through pins.

4. The wall painting device for interior decoration according to claim 3, characterized in that: The drive assembly includes a double-ended lead screw (401) rotatably connected to the mounting cylinder (201), with the threads at both ends of the double-ended lead screw (401) having opposite directions. Two sets of threaded sleeves (303) are respectively meshed with both ends of the double-ended lead screw (401). One end of the double-ended lead screw (401) is located outside the mounting cylinder (201) and is fixed with a rotating pin (402) for assisting rotation. Two sets of guide rods (403) are symmetrically fixed on the two sets of threaded sleeves (303), and the guide rods (403) are fixed inside the mounting cylinder (201).

5. The wall painting device for interior decoration according to claim 2, characterized in that: The fixed support assembly includes two sets of first support rollers (501) rotatably connected to the U-shaped mounting base (101) for supporting the inner side of the paint cloth cover (103). Two sets of first retaining rings (502) are fixed on the first support rollers (501) for preventing swaying and deviation during the support process.

6. The wall painting device for interior decoration according to claim 5, characterized in that: The elastic support assembly is disposed between the fixed support assembly and the mounting cylinder (201). The elastic support assembly includes two sets of mounting platforms (601) disposed on the U-shaped mounting base (101). The mounting platform (601) is rotatably connected to a second support roller (602) for supporting the outer side of the paint cloth cover (103). Two sets of second retaining rings (603) for preventing swaying and deviation during the support process are fixed on both sides of the second support roller (602). The U-shaped mounting base (101) is provided with a connecting assembly for connecting the mounting platform (601) and an elastic component for elastic pushing.

7. The wall painting device for interior decoration according to claim 6, characterized in that: The connecting assembly includes a mounting groove (701) opened on a U-shaped mounting base (101). Two sets of strip plates (702) are symmetrically arranged inside the mounting groove (701). A round rod (703) is slidably connected to the strip plate (702). The round rod (703) is fixed on the mounting groove (701). Two sets of mounting platforms (601) are located between the two sets of strip plates (702). The elastic component is disposed between the strip plate (702) and the mounting platform (601).

8. The wall painting device for interior decoration according to claim 7, characterized in that: The elastic component includes multiple sets of sleeves (801) fixed on the strip plate (702). A slide rod (802) is slidably connected to the sleeve (801). One end of the slide rod (802) is fixed to the mounting platform (601). A spring (803) is sleeved on the outside of the sleeve (801). The two ends of the spring (803) are respectively abutted against the strip plate (702) and the mounting platform (601).

9. The wall painting device for interior decoration according to claim 8, characterized in that: The transmission assembly includes a transmission plate (1001) disposed below the mounting sleeve (202). The transmission plate (1001) has an arc groove (1002) for abutting and transmitting with two adjacent sets of arc support plates (203). Multiple sets of fixing rods (1003) are fixed on the transmission plate (1001). A linkage assembly for auxiliary linkage is provided between the fixing rods (1003) and the strip plate (702).

10. The wall painting device for interior decoration according to claim 9, characterized in that: The linkage assembly includes a linkage plate (901) slidably connected to a U-shaped mounting base (101), a fixing rod (1003) fixed to the linkage plate (901), two sets of inclined grooves (902) are provided on the linkage plate (901), and transmission pins (903) are slidably connected to the two sets of inclined grooves (902), and the two sets of transmission pins (903) are respectively fixed to two sets of strip plates (702).

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